Removal, overhaul and installation procedures are covered in this article. If component removal and installation is primarily an unbolt and bolt-on procedure, only a torque specification may be furnished.

IGNITION SYSTEM

DISTRIBUTOR

CAUTION: Base ignition timing is not adjustable on any 2.5L, 4.0L or 5.2L engine. Base ignition timing and timing advance are controlled by the PCM. Since a conventional timing light can not be used to adjust distributor after installation, ensure distributor is returned to its original position.

Disconnect sensor connector from main harness connector. Connector is located near rear of intake manifold. Raise and support vehicle. Remove sensor mounting bolts. Remove sensor. Sensor is mounted on transmission bellhousing.

Installation (2.5 & 4.0L)

To install, reverse removal procedure. Use only proper mounting bolt. Any other replacement bolt will cause improper sensor alignment. On Wrangler with 4.0L engine and automatic transmission, ensure paper self-adhesive spacer on end of sensor is replaced if old sensor is being reused. Paper spacer is used to set proper depth. Once engine is started, paper spacer wears away.

CAUTION: The left and right fuel rails are replaced as an assembly. DO NOT attempt to separate rail halves at connecting hoses. DO NOT attempt to install a clamping device of any kind to hose(s). When removing fuel rail assembly, be careful not to bend or kink connecting hoses.

Lubricate injector "O" rings with a drop of clean engineoil. Install injectors and clips into fuel rail receiver cups. Ensureinjectors and clips are fully seated. Position fuel rail/injectorassembly on intake manifold openings. Using care not to tear "O"rings, guide each injector into intake manifold. Push right and thenleft fuel rail down until injectors are bottomed on injector shoulder.